In this lesson, students will play the role of a member of an International Team of Marine Biologists tasked with predicting and monitoring possible harmful algae blooms. They will evaluate changes in the ocean's chlorophyll counts from 1997-2007 using data sets from MyNASAData website, draw conclusions about how the chlorophyll-a levels in the ocean may effect its ecological characteristics and infer areas that should be closely monitored for harmful algal blooms.